L'Oréal Professionnel Serie Expert Scalp Advanced Anti-Oiliness 2-in-1 Professional Clay is a versatile, purifying clay that can be used as a shampoo or a mask. Its deep-unclogging action removes product residue, sweat and oil to leave hair feeling lightweight and volumised. Use it as a first step when dealing with oily dandruff flakes and then follow with Scalp Advanced Anti-Dandruff Dermo-Clarifier Shampoo, or use after Scalp Advanced Anti-Oiliness Dermo-Purifier Shampoo as part of an anti-oiliness protocol.